THE FOLIO: RETRO CLASSICS S15

Part three of the Ice on the Water trilogy, The Castle of Death is the endgame.  The party has journeyed long and hard, from island to island, in the frozen north, and now they have to go 'beyond the map' to what was once an epic fortress of a lost empire.  Will they manage to defeat the defender of the ruins and his mass of forces, and will they find a way to defeat the final dungeon?  This module is also designed in classic AD&D as well as 5E mechanics, and set for 4+ players of level 12+